Koh Tachai Pinnacle
Protected Area
Mu Ko Similan
Why dive here
With 173+ marine species recorded in the area - including blacktip reef sharks, eagle rays, giant moray eels, whale sharks and clownfish - Koh Tachai Pinnacle offers some of Similan Islands's richest pinnacle diving. Water ranges 29-31°C, warmest April, May, June.
Koh Tachai Pinnacle is a solid dive, a big granite boulder rising from the seabed, and it often delivers. We’ve had some truly epic days here, particularly when the currents are running and the bigger pelagics come to play. It's known for whale shark sightings, and while those are never guaranteed, the sheer volume of schooling fish – fusiliers, snappers, trevally – makes it exciting regardless. The coral is mostly hard corals, lots of staghorn and table corals, clinging to the rock face. We’d suggest this one for more experienced divers; the currents can be quite strong, making it a drift dive at times, but that's often when the action really picks up.
Reviews for Koh Tachai Pinnacle
Conditions
Ocean conditions, forecast and tides for Koh Tachai Pinnacle
Koh Tachai Pinnacle Ocean Conditions
Monthly averages for Koh Tachai Pinnacle, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (8.1, 98.3) (6km away)
October Averages
Sea Temperature
30°C
85°F · Range: 28.7–30.4°C
Current Speed
5.1 cm/s
Direction: S (191.3°)
Salinity
29.75 PSU
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)
Plan & book
Ways to dive Similan Islands, from day trips to liveaboards.
Day trips & courses
via GetYourGuideGuided dives, courses and snorkel trips with instant booking.
Find dive trips in Similan IslandsPlaces to stay
via Booking.comHotels and dive resorts near Similan Islands.
Search stays in Similan IslandsDive insurance
Most travel insurance excludes or limits scuba. Check what you need before you go.
Dive insurance explainedPartner links: we may earn a commission if you book, at no extra cost to you. How we make money
Where to Stay near Koh Tachai Pinnacle
Prices from Booking.com. We may earn a commission at no extra cost to you.
